Full_Name: Frank Meisschaert Version: 2.4.26 OS: linux URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (157.193.44.200) When I try to add the names "İsmail" (original, with dotted capital I) and "Ismail" (transcribed, regular capital I) to an entry using ldapmodify: dn: ... changetype: modify replace: givenName givenName: Ismail givenName:: xLBzbWFpbA== - I get the error: ldap_modify: Type or value exists (20) additional info: givenName: value #0 provided more than once The lowercase version of dotted and regular capital I is regular i which explains this error. However according to unicode case folding the dotted capital I should be mapped to 0069 0307 (i, combining dot above) which would make Ismail and İsmail different when compared case-insensitively as I would expect.